>> Pressure switches >> GGW A4


Differential pressure switch GGW A4 Dungs for gas, air, flue, exhaust gases

Pressure switch GGW A4 Dungs
  • These pressure switches GGW A4, A4-U, A4/2, A4-U/2 are designed for automatic burner controls, for usage in furnace, ventilation and air conditioning applications.
  • It is suitable for switching a circuit on, off or over on changes in actual pressure value relative to the set reference value. The reference value (switching point) is adjusted on a setting wheel provided with a scale. The test nipple is integrated in metal housings as standard.
  • Maximum operating pressure: 500 mbar, setting ranges between 0.4÷300 mbar. Ambient and medium temperature -15÷70oC, storage temperature -30÷80oC.
  • Switching voltage: DC 5÷24 V; DC 24÷48 V; AC 24÷250 V. Nominal current: DC 20 mA; (AC 10 A).
  • The GGW...A4 version has a degree of protection IP 54 and a clear cover; the GGW...A4/2 version is IP 65 and has a metal housing.
  • The installation position can change the switching pressure with up to 0.5 mbar.
  • Suitable for employment with gas families 1, 2, 3 and other neutral gaseous media as well as air, smoke and exhaust gases. It does not contain any non-ferrous metals, suitable for gases of up to max. 0.1 vol. % H2S, dry.
  • Detailed pictures for available models (move the mouse over them to zoom):
Pressure switch GGW A4 Pressure switch GGW A4/2


Function:

The differential pressure acts on the membrane, pressing it against the force of the adjusting spring and against the microswitch. The pressure switch operates without outside power.
 
  • Differential pressure switch GGW...A4 and GGW...A4/U
The switching apparatus reacts to the difference in pressure between the two pressure chambers [G 1/4 (+) - G 1/8 (-)] and, if the pressure exceeds or drops below the setpoint, activates or switches an electrical circuit.
If the lower pressure is G 1/8 (-) and excess pressure with respect to the atmosphere exists type GGW A4 must be employed. If lower power with the respect to the atmosphere exists GGW A4-U must be employed.
 
  • Over-pressure switch GGW...A4, Pressure connection G 1/4 (+):
The switching apparatus reacts to excess pressure and activates or switches if the pressure exceeds or drops below a setpoint. Simply and efficiently acting pressure switch for the excess pressure range. The pressure connection, G 1/8 (-) must not be closed or blocked.
 
  • Under-pressure switch GGW...A4-U, Pressure connection G 1/8 (-):
The switching apparatus reacts to inadequate pressure and activates or switches if the pressure exceeds or drops below a setpoint. Simply and efficiently acting pressure switch for the low-pressure range. The pressure connection, G 1/4 (+) must not be closed or blocked.


Technical specifications GGW A4

Pressure switch type Code Setting range (mbar) pmax (mbar) Degree of prot. Δp (mbar) Medium p(+) Medium p(-)
Pressure switch GGW 3 A4 248673 0.4 ÷ 3.0 500 IP 54 ≤0.3 gas
air
gas
air
Pressure switch GGW 10 A4 248276 1.0 ÷ 10 ≤0.5
Pressure switch GGW 50 A4 246176 2.5 ÷ 50 ≤1.5
Pressure switch GGW 150 A4 248295 30 ÷ 150 ≤5
Pressure switch GGW 3 A4-U 248327 -0.4 ÷ -3.0 -500 IP 54 ≤0.3 gas
air
gas
air
Pressure switch GGW 10 A4-U 240358 -1.0 ÷ -10 ≤0.5
Pressure switch GGW 50 A4-U 246178 -2.5 ÷ -50 ≤1.5
Pressure switch GGW 150 A4-U 247980 -30 ÷ -150 ≤5
Pressure switch GGW 3 A4/2 248686 0.4 ÷ 3.0 500 IP 65 ≤0.3 gas
air
gas
air
Pressure switch GGW 10 A4/2 248687 1.0 ÷ 10 ≤0.5
Pressure switch GGW 50 A4/2 248688 2.5 ÷ 50 ≤1.5
Pressure switch GGW 150 A4/2 248689 30 ÷ 150 ≤5
Pressure switch GGW 3 A4-U/2 248690 -0.4 ÷ -3.0 -500 IP 65 ≤0.3 gas
air
gas
air
Pressure switch GGW 10 A4-U/2 248691 -1.0 ÷ -10 ≤0.5
Pressure switch GGW 50 A4-U/2 248692 -2.5 ÷ -50 ≤1.5
Pressure switch GGW 150 A4-U/2 248693 -30 ÷ -150 ≤5


Dimensions GGW A4 (mm)

Differential pressure switches GGW A4 & GGW A4-U:
dimensions GGW A4-1 dimensions GGW A4-2 dimensions GGW A4-3
For the images that aren't clear move the mouse over them to zoom.

 

Differential pressure switches GGW A4/2 & GGW A4-U/2:
dimensions GGW A4/2-1 dimensions GGW A4/2-2 dimensions GGW A4/2-3

 

Double differential pressure switches GGW A4 / GGW A4:
dimensions GGW A4-GGW A4-1 dimensions GGW A4-GGW A4-2


Type key GGW A4 pressure switch

Legend Pressure switch GGW A4 Schematic Pressure switch GGW A4


Prices for gas pressure switches GGW A4

Code Type Prices without VAT
248673 Pressure switch GGW 3 A4 Au-M-MS9-V0-VS3 st-se 0.00
248276 Pressure switch GGW 10 A4 Au-M-MS9-V0-VS3 st-se 0.00
246176 Pressure switch GGW 50 A4 Au-M-MS9-V0-VS3 st-se 0.00
248295 Pressure switch GGW 150 A4 Au-M-MS9-V0-VS3 st-se 0.00
248327 Pressure switch GGW 3 A4-U Au-M-MS9-V0-VS3 st-se 0.00
240358 Pressure switch GGW 10 A4-U Au-M-MS9-V0-VS3 st-se 0.00
246178 Pressure switch GGW 50 A4-U Au-M-MS9-V0-VS3 st-se 0.00
247980 Pressure switch GGW 150 A4-U Au-M-MS9-V0-VS3 st-se 0.00
248686 Pressure switch GGW 3 A4/2 Au-M-MS9-V0-VS3 st-se 0.00
248687 Pressure switch GGW 10 A4/2 Au-M-MS9-V0-VS3 st-se 0.00
248688 Pressure switch GGW 50 A4/2 Au-M-MS9-V0-VS3 st-se 0.00
248689 Pressure switch GGW 150 A4/2 Au-M-MS9-V0-VS3 st-se 0.00
248690 Pressure switch GGW 3 A4-U/2 Au-M-MS9-V0-VS3 st-se 0.00
248691 Pressure switch GGW 10 A4-U/2 Au-M-MS9-V0-VS3 st-se 0.00
248692 Pressure switch GGW 50 A4-U/2 Au-M-MS9-V0-VS3 st-se 0.00
248693 Pressure switch GGW 150 A4-U/2 Au-M-MS9-V0-VS3 st-se 0.00
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